public void AddValidation(Control tb, StringRule rule)
{
if (ruleMap.ContainsKey(tb))
{
return;
}
tb.TextChanged += Tb_TextChanged;
ruleMap.Add(tb, rule);
if (rule.Pass(tb.Text))
{
textBeforeChange.Add(tb, tb.Text);
}
else
{
throw new TextBoxValueDoesntMatchRuleException($"<{tb.Name}>的Text属性值不满足正则表达式:{rule.ToString()}");
}
}
private void Tb_TextChanged(object sender, System.EventArgs e)
{
TextBox tb = sender as TextBox;
StringRule rule = ruleMap[tb];
if (rule.Pass(tb.Text))
{
textBeforeChange[tb] = tb.Text;
errorProvider.SetError(tb, "");
return;
}
else
{
errorProvider.SetError(tb, rule.Hint);
if (ForbiddenOutRangeInput)
{
tb.Text = textBeforeChange[tb];
}
UnvalidatedInput?.Invoke(tb, rule);
}
}